Cock-grinding machine



(No Model.) 3 SheetsSheet 1. R. A. REGESTER.

COCK GRINDING MACHINE.

No. 370,160 a Patented'Sept. 20, 1887.

Wifiesses: Inveninr: QM 42/, M

N. versus. PholmLinwgnpher. Washingon, 04 c4 3 R E T S E G E R A R COCKGRINDING MACHINE.

No. 370,160. Patented Sept. 20, 1887.

(No Model.) 3 Sheets-Sheet 3.

R. A. REGESTER.

000K GRINDING MAGHINE.

Fig. 5.

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n. PETERS. PhoIo-hlhognphcr. Washington, 0. c.

UNITED STATES PATENT Gaines.

ROBERT A. REGFSTER, OF BALTIMORE, MARYLAND.

COCK-GRINDING MACHINE.

Ei-PECIEICATION forming part of Letters Patent No. 370,160, datedSeptember 20, 1887.

(No model.)

To aZZ whom it may concern.-

Be it known that 1, ROBERT A. REGEsTER, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Cock-Grinding Machines; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in cock-grinding machines whereinis imparted an oscillating motion to the plug of the cock which is to beground by specially-adapted mechanism, hereinafter described, specialclutching devices being provided for throwing in and out of gear thatportion ofthe mechanism which operates the plug of the cock to beground, the said clutching device being so constructed that in thevibrating movement of the said plug a smooth and steady motion ismaintained free from jarring or lost motion.

In the further description of my invention reference is had to theaccompanying drawings, in which Figure 1 is a plan of the devicecomplete, with an attachment in section. Fig. 2 is an end elevation ofFig. 1. Fig. 3 is a detail view of the chocking device. Fig. 4 is adetail view, partly in section, of the coupling device. Fig. 5 is afront elevation of the expanding segmental ring used in the coupling.Fig. 6 is a-plan of a single cock-holding attachment, showing theclamping device for holding the barrel of the cock during the op erationof grinding. Fig. 7 is a side elevation of the clamp.

Similarfigures refer to si milar parts th rou ghout the several views.

The figureG denotes the table upon which the device is mounted. To thesaid table 6 are secured the bearings 7, in which oscillates the shaft8. Motion is given to the shaft 8 by the rocker-arm 9, Fig. 2, whichreceives its vibrating motion from the crank-wheel 10 through theconnecting-rod 11.

On the shaft 8 is loosely fitted the bevel gear-wheel 12, which is keptin position by the collar 42, and which, in addition to driving thesmall bevel-wheel 13, forms a portion of the coupling device. The saidcoupling device consists of the extended edge 14 of the bevel gear-Wheel12, within which freely oscillates, when contracted, the segmentalexpandingring 15, Figs. 4 and 5, the said segmental expanding-ring 15being constructed in the manner shown in Fig. 5, and consisting of thesegmental ring 15, the spokes 16, and the hub 17, all of which areintegral, each segment being connected at one end by its respectivespoke to the hub 17, thus permitting the free end of the segment to beexpanded or contracted, as may be desired.

The hub 17 is screwed to the shaft 8 by means of the set-screw 22, thuscausing the segmental ring to oscillate in unison with the shaft 8. Tothe spokes 16 are fulcrumed, at 18, the lever 19, which, when the longarm 20 of the lever 19 is thrown outward, serves to expand the segmentalring 15 through the pressure exerted by the short arm 21 of the saidlever 19 upon the projection 23, with which each segment of the ring 15is provided, thus expanding the said segmental ring 15 against the innersurface, which is formed by the extended edge 14. of the bevelgear-wheel 12, and eausi ng the said bevel gear-wheel 12 and the shalt 8to oscillate in unison. To operate the said levers 19, the sleeve 24 isprovided, which [its loosely upon the shaft 8 and is furnished with thetapered end 25, which, when the said sleeve 24 is mo vcd inward, willthrow the long arms 20 of the levers 19 outward and, in the mannerdescribed, expand the segmental ring 15. \Vhen the coupling is in gear,the sleeve 24 will oscillate in unison with the shaft, and the strap 26is provided, which permits the said sleeve 24 to be operated when inmotion by the lever 27.

The segmental ring 15 is provided withthe springs 41, Fig. 5, one end ofthe said springs being secured to the projection 23 on the segment 15and the other end of the said springs 41 being secured to the hub 17,and serves to contract the two segments of the ring 15 when released bythe tapered sleeve 24, thus permitting the said segmental ring 15 tooscillate freely within the extended edges 14 of the bevelwhee1 13.

Placed at right angles to the shaft 8 is the spindle 28, Fig. 1, whichis supported by the bearings 29, and is operated by the smallerbevel-wheel 13, which is in gear with bevelwheel 12, the said bevelgear-wheels 12. and 13 being made in such proportion to suit any desiredare through which it may be requiredto oscillate the said spindle28-about threefourths of a turn being the necessary extent of arc inwhich the spindle should travel. To the end of the spindle is attachedan ordinary lathe-chuck, 30, in which is secured in the usual manner theplug, 31, which is to be ground. The end of the spindle 28 is furtherprovided with the face-plate 32, which is furnished with slot 33, Fig.3, in which fits the bolt 34, when it is desired to chock the spindle 28for the purpose of manipulating the work by hand, when it may berequired. The said bolt 34, Fig. 3, works in the bearing 35, and isprovided with the collar 36, upon which acts the spring 37, thus holdingthe bolt 34 in position in the slot 33. The said bolt 34 is furtherprovided with the feather 38, which in the position shown in Fig. 3moves in the slot 39, with which the bearing 35 is provided. The saidfeather 38, when the bolt34 is drawn outward and the handle placed atright angles to the former position, (whereby the feather 38 is out ofline with the slot 33,) serves to hold the bolt 34 in this position andthe handle out of the way of the operator.

. ground is secured in the chuck 30.

The manner of operating is as follows: The shaft 8 being put inoperation by the mechan= ism described, the plug of the cock to be a Thebolt 34 is withdrawn from its slot 33 in the faceplate 32 and the bevelgear-wheel 12 put in gear by means of the lever 27 and the frictionalclutch device heretofore described. The barrel of the cock in which thesaid plug is to be ground is held in the clamp 50, which is manipulatedby an operator, who holds the said clamp in his hands and inserts theplug 31 within the barrel 51, Fig. 6, with the desired pressure, andpermits the said plug to oscillate therein, which is accomplished by themechanism heretofore described. It is necessary at times to withdraw andturn the barrel 51, in order to bring in contact new grinding-surfaces,and occasionally to withdraw the plug for the purpose of supplying thegrinding material. The pressure with which the plug is held in thebarrel of the cock varies at different stages of the grinding andrequires the experienced judgment of the operator. At times it isnecessary to throw the attachment out of gear and manipulate the barrelby hand, in which casethe bolt 34 is thrown in its slot 33 in theface-plate 32, which holds. the spindle 28 and its attached parts firmwhile such operation is being performed. l

The coupling mechanism herein described as 'a part of this device isvery necessary to secure a smooth and steady motion to the spindle 28,as in any of the ordinary devices where a feather or keyis usedatroublesome lost motion in the oscillating movement of the shaft isexperienced, which is magnified in its transmission to the spindle 28,and causes a jerking movement to the parts being ground. 7 It will beseen that this arrangement permits any number of grinding attachments tobe operated from the one driving-shaft, whereby any number of operatorsmay be employed at the same time.

Having described my invention and the manner of operating, what I claim,and desire to secure by Letters Patent, is

1. In a cock-grinding machine, the combination of the oscillating shaft8, 'the bevel gearwheel 12, the bevel-wheel 13, the spindle 28, set atright angles to the shaft 8, a clutch to throw the said spindle 28 in orout of gear, the face-plate 32, with its checking-bolt 34, andthe chuck30, for the purpose set forth.

2. In a cock-grinding machine, the combination of an oscillating shaft,8, thebevel gearwheel 12, the bevel gear-wheel 13, with its spindle 28set at right angles with the shaft 8, a clutch-coupling consisting ofthe bevel gear-wheel12, the segmental expanding-ring 15, the lever 19.and the tapered sleeve 24, the face-plate 32, provided with achockingbolt, 34, and a chuck,30,substantially as shown, and for thepurpose set forth.

3. In a cock-grinding machine, the combination of the oscillating shaft8, the bevel gear-wheel 12,the bevel gear-whcel13, with its spindle 28set at right angles to the shaft 8,

a clutch to throw the said spindle 28 in and out of gear, the chuck 30,and a clutching device for holding firm the said spindle 28, consistingof the face-plate 32,the bolt34, provided with the feather 38, and thebearing 35, pro- I vided with the slot 39, substantially as shown, andfor the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

